123340255020 has 72 divisors (see below), whose sum is σ = 374343619104. Its totient is φ = 32872140288.

The previous prime is 123340255001. The next prime is 123340255021. The reversal of 123340255020 is 20552043321.

It is a happy number.

123340255020 is a `hidden beast` number, since 1 + 233 + 402 + 5 + 5 + 0 + 20 = 666.

It is not an unprimeable number, because it can be changed into a prime (123340255021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 127057 + ... + 512663.

It is an arithmetic number, because the mean of its divisors is an integer number (5199216932).

Almost surely, 2^123340255020 is an apocalyptic number.

123340255020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123340255020 is an abundant number, since it is smaller than the sum of its proper divisors (251003364084).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123340255020 is a wasteful number, since it uses less digits than its factorization.

123340255020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387399 (or 387394 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

Adding to 123340255020 its reverse (20552043321), we get a palindrome (143892298341).

The spelling of 123340255020 in words is "one hundred twenty-three billion, three hundred forty million, two hundred fifty-five thousand, twenty".